PGC, Inc.
Appendix B; SmartPad version 0.503
Steady State & Programmable
November 2005
B-15
Access Code Screen
(Steady State and Prog Modes)
The access code screen is accessed from the area modification screen by choosing CODE.
Entering a four-digit number will change the access code to the value entered.
Pressing DONE will access the current access code screen to display the access code.
Pressing REDO will discard any entered digits and allow a new code to be entered.
Note: All four digits must be entered in order to change the code.
LOCK (F3) will toggle between LOCK and UNLOCK. When the display reads UNLOCK, the
set points cannot be modified. When the display reads LOCK, the set points are accessible.
Water RTD Calibration Screen
(Steady State and Prog Modes)
This screen is only accessible when the system is equipped with digital sensors. If analog
sensors are installed, pressing CAL will return to the process variable screen.
When a digital air/Rh sensor is used, the water temperature is measured using an RTD that is
connected directly to the controller. The controller then converts the RTD resistance to a digital
temperature measurement using a 16-bit A/D converter. The offset (zero) and scaling (span) of
this A/D converter input can be adjusted from the SmartPad keypad. Refer to the system user
manual for step by step procedures to make this adjustment.
REF. VALUE Enter the temperature that should be displayed by the water temperature
measurement circuit.
ENTER THE NEW LOCK
OUT ACCESS CODE:
REDO LOCK ESC
Key for function keys action
F1
= REDO: try again without filling the
field
F2
= no function
F3
= LOCK: lock or unlock access to the
Set points.
F4
= ESC: return to process variable screens
H2O RTD CALIBRATION
REF. VALUE 03.9
°
C
ZERO SPAN NEXT ESC
Key for function keys action
F1
= ZERO: access the zero adjust screen
F2
= SPAN: access the span adjust screen
F3
= NEXT: access other RTD calibrations
F4
= ESC: return to process variable
screen
Summary of Contents for 9354-4250
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